Enantioselective Total Synthesis of (+)-Lysergol: A Formal <i>anti</i>-Carbopalladation/Heck Cascade as the Key Step
作者:Bastian Milde、Martin Pawliczek、Peter G. Jones、Daniel B. Werz
DOI:10.1021/acs.orglett.7b00675
日期:2017.4.7
The enantioselective synthesis of (+)-lysergol was completed in 12 steps and an overall yield of 13% starting from a known literature precursor. The keystep relies on a domino reaction containing a formal anti-carbopalladation, which is terminated by a β-silyl-directed Heck reaction. During this transformation, the two six-membered rings of the ergot scaffold are formed in a completely stereospecific